/Engine/Source/Runtime/InteractiveToolsFramework/Public/ToolBuilderUtil.h
First all Actors that pass predicate. Searches Actors selection list.
namespace ToolBuilderUtil { INTERACTIVETOOLSFRAMEWORK_API [TArray](API\Runtime\Core\Containers\TArray)< [AActor](API\Runtime\Engine\GameFramework\AActor) * > ToolBuilderUtil::FindAllActors ( const [FToolBuilderState](API\Runtime\InteractiveToolsFramework\FToolBuilderState) & InputState, const [TFunction](API\Runtime\Core\GenericPlatform\TFunction)< bool([AActor](API\Runtime\Engine\GameFramework\AActor) *)> & Predicate ) }